diff options
| author | Nihar Chaithanya <niharchaithanya@gmail.com> | 2024-12-31 00:26:26 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-07 15:38:55 +0100 |
| commit | cf95c0c4e06353e647520132bb90e1c2fea1ffb7 (patch) | |
| tree | 9763041423f0df28ddbb68ba04905905ef69d25a | |
| parent | f07296bc75ba01bd260b8f805725b2217750b7e3 (diff) | |
staging: gpib: fluke: Handle gpib_register_driver() errors
The function gpib_register_driver() can fail, resulting in a
semi-registered module and does not return an error value if it
fails.
Unregister the previous platform driver and gpib registering
functions if subsequent gpib_register_driver() fail and return the
error value. Add pr_err() statements indicating the fail and the error
value.
Signed-off-by: Nihar Chaithanya <niharchaithanya@gmail.com>
Link: https://lore.kernel.org/r/20241230185633.175690-7-niharchaithanya@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/gpib/eastwood/fluke_gpib.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/drivers/staging/gpib/eastwood/fluke_gpib.c b/drivers/staging/gpib/eastwood/fluke_gpib.c index 3f938ab0c84d..875b3adcb584 100644 --- a/drivers/staging/gpib/eastwood/fluke_gpib.c +++ b/drivers/staging/gpib/eastwood/fluke_gpib.c @@ -1155,16 +1155,38 @@ static int __init fluke_init_module(void) result = platform_driver_register(&fluke_gpib_platform_driver); if (result) { - pr_err("fluke_gpib: platform_driver_register failed!\n"); + pr_err("fluke_gpib: platform_driver_register failed: error = %d\n", result); return result; } - gpib_register_driver(&fluke_unaccel_interface, THIS_MODULE); - gpib_register_driver(&fluke_hybrid_interface, THIS_MODULE); - gpib_register_driver(&fluke_interface, THIS_MODULE); + result = gpib_register_driver(&fluke_unaccel_interface, THIS_MODULE); + if (result) { + pr_err("fluke_gpib: gpib_register_driver failed: error = %d\n", result); + goto err_unaccel; + } + + result = gpib_register_driver(&fluke_hybrid_interface, THIS_MODULE); + if (result) { + pr_err("fluke_gpib: gpib_register_driver failed: error = %d\n", result); + goto err_hybrid; + } + + result = gpib_register_driver(&fluke_interface, THIS_MODULE); + if (result) { + pr_err("fluke_gpib: gpib_register_driver failed: error = %d\n", result); + goto err_interface; + } - pr_info("fluke_gpib\n"); return 0; + +err_interface: + gpib_unregister_driver(&fluke_hybrid_interface); +err_hybrid: + gpib_unregister_driver(&fluke_unaccel_interface); +err_unaccel: + platform_driver_unregister(&fluke_gpib_platform_driver); + + return result; } static void __exit fluke_exit_module(void) |